. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. HYDNUM. 433 Hydnum Schiedermayeri Heufl. ( America). Sporo- phores fleshy, with a sulphur-yellow colour both outside and inside, and with a smell of anise. They occur on living apple-trees, less frequently on other species of Pyrus. Accord- ing to Schroeter, Thiimen, and Ludwig, the mycelium spreads through the stems and kills the trees. Thumen ^ thus describes the diseased wood of the apple: "It has a gree
. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. HYDNUM. 433 Hydnum Schiedermayeri Heufl. ( America). Sporo- phores fleshy, with a sulphur-yellow colour both outside and inside, and with a smell of anise. They occur on living apple-trees, less frequently on other species of Pyrus. Accord- ing to Schroeter, Thiimen, and Ludwig, the mycelium spreads through the stems and kills the trees. Thumen ^ thus describes the diseased wood of the apple: "It has a greenish-yellow colour, which passes over gradually to the normal colour of the wood: it becomes soft and friable, smelling, like the sporophore, faintly of ; Sistotrema fusco-violaceum Schrad. (Britain.) This according to Skiljakow^ is parasitic jan living pines, entering by wounds, and carrying destruction throughout the wood. POLYPOREAE. Polyporus. Sporophores large and usually shaped more or less like a hoof or small bracket. The sporogenous layer is com- posed of cylindrical tubes, which generally occupy the lower surface of the sporophore. The substance between the tubes is different from that of the rest of the sporophore. Polyporus (Femes) igniarius (L.).^ (Britain and America). Sporophores on living stems of oak, alder, apple, willow, and other ^Thumen, " Ein ; Zeitsch. f. Pflanzenkranhheiten, 1891. ^Skiljakow, Scripta botan. horti universitatis Petropolitanae, 1890. *R. Hartig, Zersetzungserscheinungen, PI. XV. and XVI. 2e. Fig. 263.—Polyporus igniarius on Oak. At the upper end a wood-pecker's nest-hole. (v. Tubeuf phot.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Tubeuf, Karl, freiherr von, 1862-1941; Smith, William G. London ; New York [etc. ] : L
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi
